题名 |
Antiferromagnetic Ordering of Gd^(3+) in Gd2CuO4-δ and (Gd1.85Ge0.15)CuO4-δ |
作者 |
G. H. Hwang;J. H. Shieh;H. C. Ku;J. C. Ho |
关键词 | |
期刊名称 |
Chinese Journal of Physics |
卷期/出版年月 |
30卷3期(1992 / 06 / 01) |
页次 |
351 - 355 |
内容语文 |
英文 |
英文摘要 |
Calorimetric studies were made between 2 and 18 Kon twoT.-214 compounds, Gd2CuO4-δ and (Gd1.85Ce0.15)CuO4-δ.Antiferromagnetic orderingof Gd^(3+) prevails in both cases, each with a λ-like heat capacity anomaly at TN = 6.6 K and 5.3 K, respectively. A broad shoulder in heat capacity follows with a peak near 2 K. By integrating the area under experimental data and an appropriate extrapolation to zero temperature in a C/T versus T plot, the magnetic entropy associated with the ordering is indeed close to 2Rln8 or 1.85Rln8 per mole of compound, corresponding to the expected value for Gd^(3+) with J = S = 7/2. |
主题分类 |
基礎與應用科學 >
物理 |
被引用次数 |
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